+++ /dev/null
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-; Conway's Game of Life, based on the work of:
-;; Laurent Petit https://gist.github.com/1200343
-;; Christophe Grand http://clj-me.cgrand.net/2011/08/19/conways-game-of-life
-
-(ns ^{:doc "Conway's Game of Life."}
- game-of-life)
-
-;; Core game of life's algorithm functions
-
-(defn neighbours
- "Given a cell's coordinates, returns the coordinates of its neighbours."
- [[x y]]
- (for [dx [-1 0 1] dy (if (zero? dx) [-1 1] [-1 0 1])]
- [(+ dx x) (+ dy y)]))
-
-(defn step
- "Given a set of living cells, computes the new set of living cells."
- [cells]
- (set (for [[cell n] (frequencies (mapcat neighbours cells))
- :when (or (= n 3) (and (= n 2) (cells cell)))]
- cell)))
-
-;; Utility methods for displaying game on a text terminal
-
-(defn print-board
- "Prints a board on *out*, representing a step in the game."
- [board w h]
- (doseq [x (range (inc w)) y (range (inc h))]
- (if (= y 0) (print "\n"))
- (print (if (board [x y]) "[X]" " . "))))
-
-(defn display-grids
- "Prints a squence of boards on *out*, representing several steps."
- [grids w h]
- (doseq [board grids]
- (print-board board w h)
- (print "\n")))
-
-;; Launches an example board
-
-(def
- ^{:doc "board represents the initial set of living cells"}
- board #{[2 1] [2 2] [2 3]})
-
-(display-grids (take 3 (iterate step board)) 5 5)
-
-;; Let's play with characters
-(println \1 \a \# \\
- \" \( \newline
- \} \" \space
- \tab \return \backspace
- \u1000 \uAaAa \u9F9F)
-
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